John helped his teacher erase the blackboard after class.

约翰下课后帮老师。

Will a black chalk chalk on a white blackboard?

色的粉笔会白色的上写字吗?

Mommy will write the words on the blackboard.

妈妈会上写下这个单词。

He was writing something on the blackboard.

他当时正上写东西。

Look at the two pictures on the blackboard.

看上的两幅画。

Please look at the four questions on the blackboard.

请看上的四个问。

Now, look at the blackboard, please, and repeat after me.

请同学们现看， 并跟着我念。

I wrote down a bunch of ideas on the blackboard.

我上写了一堆点子。

The students are asked write out the answers on the blackboard.

学生被叫去把答案写上。

He called Jobs into his office, sketched it out on his little blackboard, and asked him to design it.

他把乔布斯叫进办公，己的小上画出了草图，然后叫他去设计。

He is drawing something on the blackboard with a piece of chalk.

他正用粉笔上画东西。

Blackboard is one word, but drawing board is written as two words.

Blackboard是写成一个单词的形式，但是drawing board常以独立的形式出现。

The teacher would stand at the front. She would write on a blackboard.

老师站教前面。她会上写书。

Thinking of all these things, she stepped to the blackboard and wrote CATASTROPHE.

这么想着，她走到前，把“CATASTROPHE”这个单词写了出来。

I can't draw oil because oil is black on a blackboard.

因为也是的 所以我没法把石油画出来。

The little boy drew a picture on the blackboard with a piece of chalk.

小男孩用一根粉笔上画画。

And there's fresh chalk on the blackboard in case of any late-night epiphanies.

那里有新粉笔可以记下深夜的灵光一现。

While the blackboard helped, he also encouraged other family members to communicate in English.

帮助的同时，他也鼓励其他家庭成员用英语交流。

But there's a real high craft side to giving a beautiful lecture on a blackboard.

但上课时能写出一漂亮的书确实需要很高的技巧。

But there's a real high craft side to getting a beautiful lecture on a blackboard.

但上进行一个漂亮的演讲确实要很高的技巧。